A base south of Tarhouna that was under the command of Gaddafi's son Khamis, is now in the hands of Libyan fighters who are preparing an offensive on Bani Walid.<br /><br />Libyan fighters have uncovered dozens of Gaddafi's tanks hidden in the base.<br /><br />Al Jazeera's Sue Turton reports from south of Tarhouna, Libya.
